I just watched S2, #10, "Bust Out" - very good! - but I caught some random episodes while it was going on and was already a fan so unfortunately I leave the surprise effect regarding the outcome of most things off of my appreciation; I do look away when I see that the conversation heads towards Season 4 and on but I can tell you that you don't miss anything by knowing how the series will end, Ade's fate, etc...

the greatest thing about it is how things are ambiguously left open for interpretation and most times you're so wrapped up into the episode that you can't help but feel like it's a surprise. Tony's hit in "Isabella", for instance - I knew it was coming but it didn't affect the overall impact of the scene. I'm sure you've rewatched it yourself a few times